JPH036119B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a winch, and more particularly to a manual winding winch that allows rope winding and rope release to be operated with one hand.

FIGS. 1 and 2 show an example of an automatic bite type seat winch (Japanese Patent Application Laid-Open No. 126650/1982) which has been conventionally used as a seat winch for yachts. In the figure, 1 is a fixed base of the device, 1a is a fixed frame integrated with the fixed base 1, 1b is also a fixed shaft cylinder, 2 is a winch drum, and 3 is an intervening device between the winch drum 2 and the shaft cylinder 1b. 4 is a main shaft rotatably provided in the shaft cylinder portion 1b; 5 is the roller bearing; 6 is a reduction gear device provided between the main shaft 4 and the drum 2; 7 is the upper end surface of the drum 2. 8 and 9 are guide rods that guide the clamp ring 7 slidably in the axial direction with respect to the drum 2; 10 is a guide rod that guides the clamp ring 7 with respect to the drum 2; A coil spring biased toward the drum 2, 11 a sleeve fixed to the fixed shaft cylinder part 1b, 11a a flange thereof, 12
13 is a rope, and 14 is a handle fitted to the main shaft 4. Reference numeral 13 designates a rope release member that also serves as a rope guide and is fixed to the flange portion 11a.

The rope release member 12 which also serves as a rope guide allows the rope 13 to be transferred between the drum 2 and the rope engaging part 15 formed between the upper end surface of the drum 2 and the clamp ring 7 while the drum 2 is rotating. The rope guide section 1 guides the rope 13 so as to
2a, the rope 13 caught in the rope biting part 15 is removed from the rope biting part 15 while the drum 2 rotates in the direction in which the rope 13 is fed out. A rope release protrusion 12b for pushing outward is integrally formed. As mentioned above, in the conventional winch, the rope release member 12 is fixed to the fixed shaft cylinder part 1b via the flange 11 fixed by the serrations 16, so once the winch is attached to the hull etc. It was not easy to change the release position. If the release position of the rope was to be changed, the setting position of the rope release member 12 would have to be changed after removing the fitting portion of the serrations 16 shown in FIG. Furthermore, in order to fix the rope release member 12 to the fixed base 1, the fixed shaft cylinder part 1b, which is integrated with the base 1, must be raised nearly above the main shaft 4 where the rope release member 12 is located, which reduces the weight of the winch. There was no sign of an increase. Further rope 13
When the main shaft 4 rotates, the rope 13 is wound around the drum 2 and simultaneously released from the rope catching part 15. Therefore, when winding the rope 13 around the drum 2, the amount of work required to unwind the rope 13 is consumed at the same time. This has the disadvantage that when winding the rope, an extra force is required for the amount of work required to release the rope.

This invention was made in order to solve the above-mentioned drawbacks of the conventional equipment, and is a ratchet type winch in which a rope is wound around a drum by alternately reversing the drive shaft. The rope release member is rotatably provided, and the rope release member is configured to be interlocked with the drive shaft via the handle of the drive shaft, so that the position of the rope release member can be changed arbitrarily, and the winch The purpose is to simplify the structure, reduce its weight, and further reduce the force required when winding the rope.

Embodiments of the winch of the present invention will be described below with reference to FIGS. 3 to 5. This example describes a winch for a yacht.

First, as shown in FIG. 3, a drive shaft 21 with a handle insertion slot 21a at the top is rotatably provided in a fixed shaft cylinder 20a formed integrally with a fixed base 20. In order to rotatably fit the drum 22 on the outer periphery and prevent the drum 22 from rotating in the opposite direction, a reverse stopper pole 23 is pivotally supported on the lower outer periphery of the fixed base 20. An engaging projection 22a is provided on the inner periphery of the drum 22 facing the drum 22. In addition, in order to transmit the rotation of the drive shaft 21 to the drum 22, a drive pole 24 is pivotally supported on the upper inner periphery of the drum 22, and an engaging protrusion 21b is provided on the outer periphery of the drive shaft 21 facing the drive pole 24. to be placed.

Further, a ring-shaped rope release member 25 is rotatably fitted to the upper end of the drum 22. Note that 26 is a positioning ring for the rope release member 25;
The drum 22 is mounted so as to support the upper and lower surfaces of the
They are fitted into respective annular grooves provided in the.
Further, on the lower surface of the rope release member 25, as shown in FIG. 5, a ring-shaped protrusion 25a for rope release, which gradually projects downward in a spiral shape, is provided. Note that 25b is the stepped portion for releasing the rope.

Further, 27 is a disk that abuts the upper end surface of the drum 22, has an outer periphery that fits with the rope release member 25, and has an inner periphery that fits with the drive shaft 21, and 28 is a disk that comes into sliding contact with the top surface of the disk 27. 29 is a positioning ring fitted into the upper annular groove of the drive shaft 21, and 29 is a positioning ring fitted into the lower annular groove of the drive shaft 21 so as to be in sliding contact with the lower surface of the fixed shaft cylinder 20a.

Reference numeral 30 denotes a collar fitted into a notch in the upper inclined surface of the rope release member 25. The head 31a of the bolt 31 is inserted into the upper surface of the collar 30, and the threaded portion of the bolt 31 is penetrated downward. The bolts 31 are screwed into the rope release member 25 through the collar 30 to remove the rollers 32.
Position 2.

Reference numeral 33 denotes a handle for rotating the drive shaft 21, and a shaft 33a that fits into the handle insertion slot 21a of the drive shaft 21 projects from the base of the handle 33. forms a recessed portion 33c that engages with the roller 32 as shown in FIG. Note that 33d is a grip portion of the handle 33.

Next, the operation of the winch of the present invention constructed as described above will be explained. As shown in the figure, the rope 34 that has been wound around the drum 22 multiple times is wound around the drum 22 until it contacts the lower surface of the rope release member 25.
That is, when the handle 33 is rotated clockwise (in the direction of arrow A) in FIG.
The drum 22 also rotates clockwise via the engaging protrusion 21b and the driving pole 24, and the rope 34 is wound around the drum 22. At this time, as the drum 22 rotates, the concave portion 33c of the handle 33, the roller 32,
Since the rope release member 25 also rotates together with the bolt 31, the relative position of the rope 34 in contact with the rope release member 25 and the rope release step 25b does not change. Therefore, the release action of the rope 34 is not performed during this rope winding.

However, when the handle 33 is rotated counterclockwise (in the direction of arrow B) in FIG. Since the drum 22 is engaged with the protrusion 22a to stop the drum 22 from rotating backward, the drum 22 remains in a stopped state. However, when the handle 33 rotates counterclockwise, the rope release member 25 is released via the roller 32 and the bolt 31.
rotates counterclockwise together with the handle 33, so the rope release step 25b rotates counterclockwise with respect to the drum 22, and the rope 34 wrapped around the drum 22 is moved in the direction of arrow C in FIG. It can be removed by peeling it off. Therefore, in the winch of the present invention, the rope 34 can be released and pulled out approximately in the direction directed by the arm 33b of the handle 33, so the release position of the rope 34 can be set arbitrarily by selecting the operating position of the handle 33. can be selected.

This invention has the above-described configuration, and in particular, by making the rope release member 25 operate in conjunction with the drive shaft 21 via the handle 33,
Even after the winch is once attached to the hull or the like, the direction of the release position of the rope 34 can be easily selected by rotating the drive shaft 21, and the fixed shaft cylinder 20a integrated with the fixed base 20 is There is no need to raise the rope release member 25 above the drive shaft 21, and the length is shorter than the conventional one shown in FIG. In addition, the winch of the present invention has a simple structure in which the ring-shaped rope release member 25 is directly fitted to the upper end of the drum 22, which helps to reduce the weight of the winch and allows the rope release member 25 to be connected directly to the upper end of the drum 22. Since no biting part is required, the structure is also extremely simple. Furthermore, in the winch of the present invention, the operation of winding the rope 34 around the drum 22 and the operation of releasing the rope 34 from the drum 22 are performed separately, so that the energy applied to the drive shaft 21 when winding the rope 34 around the drum 22 is reduced. Since all the ropes can be used for winding, the excellent effect of reducing the driving force when winding the rope can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a conventional automatic biting seat winch, Fig. 2 is a longitudinal sectional view thereof, Fig. 3 is a longitudinal sectional view of the winch of the present invention, and Fig. 4 is a partially cutaway view. The plan view shown in Fig. 5 is taken along the line X-X in Fig. 4.
FIG. 20...Fixed base, 20a...Fixed shaft cylinder, 21
... Drive shaft, 21b ... Engagement projection, 22 ... Drum, 22a ... Engagement projection, 23 ... Reverse stop pole, 24 ... Drive pole, 25 ... Ring-shaped rope release member, 25a ...Ring-shaped protrusion, 2
5b...Stepped part for rope release, 30...Color, 3
1...Bolt, 32...Roller, 33...Handle, 33c...Recessed portion, 34...Rope.

Claims (1)

[Claims] 1. In a ratchet type winch in which a rope is wound around a drum by alternately reversing the drive shaft, a ring-shaped rope release member is rotatably provided at one end of the drum, and the rope release member is connected to the handle of the drive shaft. A winch characterized by being interlocked with a drive shaft through a drive shaft.